SAM3U2E Atmel Corporation, SAM3U2E Datasheet - Page 709

no-image

SAM3U2E

Manufacturer Part Number
SAM3U2E
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM3U2E

Flash (kbytes)
128 Kbytes
Pin Count
144
Max. Operating Frequency
96 MHz
Cpu
Cortex-M3
# Of Touch Channels
57
Hardware Qtouch Acquisition
No
Max I/o Pins
96
Ext Interrupts
96
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Hi-Speed
Usb Interface
Device
Spi
5
Twi (i2c)
2
Uart
5
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
36
Self Program Memory
YES
External Bus Interface
1
Dram Memory
No
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Figure 35-19. FSK Modulator Output
35.7.3.6
35.7.3.7
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
Uptstream Frequencies
unipolar output
FSK Modulator
default polarity
[F0, F0+offset]
NRZ stream
Manchester
Synchronous Receiver
Receiver Operations
encoded
Output
data
Txd
1
In synchronous mode (SYNC = 1), the receiver samples the RXD signal on each rising edge of
the Baud Rate Clock. If a low level is detected, it is considered as a start. All data bits, the parity
bit and the stop bits are sampled and the receiver waits for the next start bit. Synchronous mode
operations provide a high speed transfer capability.
Configuration fields and bits are the same as in asynchronous mode.
Figure 35-20
Figure 35-20. Synchronous Mode Character Reception
When a character reception is completed, it is transferred to the Receive Holding Register
(US_RHR) and the RXRDY bit in the Status Register (US_CSR) rises. If a character is com-
pleted while the RXRDY is set, the OVRE (Overrun Error) bit is set. The last character is
transferred into US_RHR and overwrites the previous one. The OVRE bit is cleared by writing
the Control Register (US_CR) with the RSTSTA (Reset Status) bit to 1.
Example: 8-bit, Parity Enabled 1 Stop
Baud Rate
Sampling
Clock
RXD
illustrates a character reception in synchronous mode.
Start
0
D0
D1
D2
0
D3
D4
D5
D6
SAM3U Series
SAM3U Series
D7
1
Parity Bit
Stop Bit
709
709

Related parts for SAM3U2E